Feedback Environment, Feedback Fairness, and the Feedback Intervention Theory

iii To all those wonderful people who taught and mentored me at any time in my life who believed in me and thus helped me grow. Acknowledgements Many people gave time and energy out of their busy lives in order to support me in accomplishing this dissertation. Some gave me valuable knowledge, advice, and inspiration; others offered me emotional support and encouragement. This is a heartfelt " thank you! " to all of them. First of all I want to express my sincere gratitude to Prof. Dr. Sabine Sonnentag for her careful supervision and guidance of my efforts in compiling this dissertation. I learned a lot about how to do research which I am cordially thankful for because it sharpened my thinking. In particular, I appreciate Sabine's tireless commitment to and the smoothness of our collaboration in preparing the presentation of our research results to the scientific world.